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Finding the Fourth Proportional to 266,856.60, 400,222.37 and 77,266.25

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Solution

The fourth proportional to 266,856.60, 400,222.37 and 77,266.25 is: 115,881.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,856.60 : 400,222.37 = 77,266.25 : x
  2. Step 2: Convert to fraction form
    266,856.60/400,222.37 = 77,266.25/x
  3. Step 3: Cross multiply
    266,856.60x = 400,222.37 × 77,266.25
  4. Step 4: Simplify right side
    266,856.60x = 30,923,683,205.53
  5. Step 5: Solve for x
    x = 30,923,683,205.53/266,856.60
  6. Step 6: Final answer
    x = 115,881.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.